McCain cited Iran’s recent execution of a nuclear scientist who helped the United States as an example. The man's name was reportedly mentioned in Clinton’s emails that were kept on her private server during her time as secretary of State.

“Why aren’t we talking about this, talking about the fact that she put our national security at risk?” McCain asked. “It’s so egregious. This is real-life information about our CIA informants being murdered, and it’s getting no coverage, except on this channel.”

McCain has insisted she won’t be voting for Clinton or Trump in November.